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Finding the Fourth Proportional to 620,960.13, 931,801.66 and 261,104.94

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Solution

The fourth proportional to 620,960.13, 931,801.66 and 261,104.94 is: 391,809.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,960.13 : 931,801.66 = 261,104.94 : x
  2. Step 2: Convert to fraction form
    620,960.13/931,801.66 = 261,104.94/x
  3. Step 3: Cross multiply
    620,960.13x = 931,801.66 × 261,104.94
  4. Step 4: Simplify right side
    620,960.13x = 243,298,016,526.20
  5. Step 5: Solve for x
    x = 243,298,016,526.20/620,960.13
  6. Step 6: Final answer
    x = 391,809.40

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.